Question
The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C-1 respectively. The ambient air is at 30°C and the heat transfer co-efficient between the outer surface of wall and air is 20 W.m⁻².°C-1. The rate of heat loss from the outer surface in W.m-2is
Answer: Option A
Submit Your Solution Below and Earn Points !
Submit Your Solution Below and Earn Points !
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution